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about omapl138 usb otg register problem

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When   I   debug  usb_host_msc  testcase, I  found   some register  address  can't  found  in   document ,such  like  follow  address.

The usb base address is  0x1e00400 , the   offset  is  0x400,  but  I  can't  find  the  register  is  address : 0x1e00800 ;  Can  you tell me this  is  why or  give me  the  complete  doucument  contain  follow  address  register 。

#define USB_O_EPC               0x00000400  // USB External Power Control
#define USB_O_EPCRIS            0x00000404  // USB External Power Control Raw
                                            // Interrupt Status
#define USB_O_EPCIM             0x00000408  // USB External Power Control
                                            // Interrupt Mask
#define USB_O_EPCISC            0x0000040C  // USB External Power Control
                                            // Interrupt Status and Clear
#define USB_O_DRRIS             0x00000410  // USB Device RESUME Raw Interrupt
                                            // Status
#define USB_O_DRIM              0x00000414  // USB Device RESUME Interrupt Mask
#define USB_O_DRISC             0x00000418  // USB Device RESUME Interrupt
                                            // Status and Clear
#define USB_O_GPCS              0x0000041C  // USB General-Purpose Control and
                                            // Status
#define USB_O_VDC               0x00000430  // USB VBUS Droop Control
#define USB_O_VDCRIS            0x00000434  // USB VBUS Droop Control Raw
                                            // Interrupt Status
#define USB_O_VDCIM             0x00000438  // USB VBUS Droop Control Interrupt
                                            // Mask
#define USB_O_VDCISC            0x0000043C  // USB VBUS Droop Control Interrupt
                                            // Status and Clear
#define USB_O_IDVRIS            0x00000444  // USB ID Valid Detect Raw
                                            // Interrupt Status
#define USB_O_IDVIM             0x00000448  // USB ID Valid Detect Interrupt
                                            // Mask
#define USB_O_IDVISC            0x0000044C  // USB ID Valid Detect Interrupt
                                            // Status and Clear
#define USB_O_DMASEL            0x00000450  // USB DMA Select


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